ייִדישער מחשבֿה אויף יואל 2:14

1. Regret is a sign that the sin is disgraceful in his eyes, as written: "He who knows will return and regret and leave a blessing behind him" (Yoel 2:14). It is said of one who persists in his sins for a long time: "no man repented himself of his wickedness" (Yirmiyahu 8:6). We ourselves can see in relationships between human beings, that when one who wronged his fellow shows regret for having wronged him, this will be strongest the factor for his fellow's granting him forgiveness.